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Light source device with high heat-dissipation efficiency

  • US 7,789,535 B2
  • Filed: 06/22/2009
  • Issued: 09/07/2010
  • Est. Priority Date: 08/25/2008
  • Status: Expired due to Fees
First Claim
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1. A light source device, comprising:

  • a circuit board with a circuit layer formed thereon;

    a solid state lighting element placed on the circuit board and electrically connected to the circuit layer;

    a hollow cylindrical metal reflector placed on the circuit board and electrically insulated from the circuit layer, an inner surface of the reflector surrounding the solid state lighting element to reflect and direct light from the solid state lighting element towards an opposite side of the reflector to the solid state lighting element; and

    a hollow cylindrical heat conductor surrounding the reflector therein and threadably engaged with the reflector, the heat conductor having a plurality of fins radially extends from an outer surface thereof, the heat conductor being detachably mounted to the reflector and the fins being electrically insulated from the circuit layer;

    wherein an insulating thermal conductivity material is sandwiched between the reflector and the circuit layer.

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